224 



INDEX AND GLOSSARY. 



Polyphyllous, 84. 



Polysepalous : having separate 



sepals, 5, 205. 

 Pome, 53, 232. 



Posterior : next the axis, 197. 

 Potassium, 307, 308. 

 Praefloration, see Estivation. 

 Praefoliation : the disposition of 



leaves in the hud, 166. 

 Prickles, 227. 

 Primary roots, 132. 

 Primine, 244. 

 Procarnbium, 296. 

 Procumbent : lying on the ground. 

 Proembryo, 354. 

 Prosenchyma, 286. 

 Prostrate, 149. 

 Pro thallium, 325. 

 Protonema, 342. 

 Protoclasm, 260. 

 Pseudocarp, 236. 

 Pteridophytes, 337. 

 Pubescent: covered with fine down. 

 Punctate: having transparent dots, 



like the leaves of St. John's Wort. 

 Putamen, 51, 231. 

 Pyxis, 240. 



Quinquefoliolate : having five leaf- 

 lets, 180. 



Raceme, 189. 



Racemose : like a raceme, 143. 



Radial bundles, 302. 



Radiate, 168. 



Radical : pertaining to the root, 

 4,13,18,60. 



Radical leaves, 4, 28. 



Radicle, 79, 117, 132, 252. 



Ramification, 141. 



Raphe, 246. 



Raphides, 278. 



Ray: the marginal florets of a 

 Composite flower,as distinguish- 

 ed from the disk. 



Receptacle, 8. 



Recurved : curved backwards. 



Reduplication, 200. 



Reflexed : bent backwards, 88. 



Regular; with parts of the same 

 size and shape, 5, 205, 207, 



Rejuvenescence, 284. 



Reniform, Fig. 156. 



Resin, 281. 



Respiration, 312. 



Reticulated cells, 268, 287. 



Retuse : slightly notched at the 

 apex. 



Revolute : rolled back, 166. 



Rhachis : an axis, 324. 



Rhizoid, 340. 



Rhizome, 151. 



Ringent, 209. 



Root, 2, 13, 131. 



Root-cap, 131. 



Root-hairs, 131, 226. 



Rootlet, 2. 



Root- pressure, 316. 



Root-stock, 88, 151. 



Rotate, 208. 



Rudimentary : imperfectly devel- 

 oped. 



Rugose : wrinkled. 



Runcinate : with teeth pointing 

 backwards, as in the leaf of 

 Dandelion, 176. 



Runner, 134. 



Sagittate, 28, 175. 

 Salver-shaped, Fig. 179. 

 Samara, Figs. 76, 208. 

 Saprophytes, 135, 156, 310. 

 Sarcocarp : the flesh of a drupe. 

 Scabrous: rough. 

 Scalariform cells, 268, 287. 

 Scales, 74, 124, 137, 194. 

 Scandent: climbing. 

 Scape, 19, 60, 88. 

 Scar, 88. 

 Schizocarp, 242. 

 Scion : a young shoot. 

 Sclerenchyma, 273, 286, 303. 

 Scorpioid cyme, 144. 

 Secondary roots, 134. 

 Secundine, 244. 

 Seed, 12, 244. 

 Seed-leaves, 78. 

 Seed-vessel, see Ovary. 

 Self-fertilization, 88. 

 Sepal, 5, 205. 



Septicidal (dehiscence) : splitting 

 open along the partitions, 239, 



